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Finding the Fourth Proportional to 66,904.60, 100,356.90 and 56,018.20

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Solution

The fourth proportional to 66,904.60, 100,356.90 and 56,018.20 is: 84,027.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,904.60 : 100,356.90 = 56,018.20 : x
  2. Step 2: Convert to fraction form
    66,904.60/100,356.90 = 56,018.20/x
  3. Step 3: Cross multiply
    66,904.60x = 100,356.90 × 56,018.20
  4. Step 4: Simplify right side
    66,904.60x = 5,621,812,895.58
  5. Step 5: Solve for x
    x = 5,621,812,895.58/66,904.60
  6. Step 6: Final answer
    x = 84,027.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.